import greenfoot.*;

/**
 * This class defines a crab. Crabs live on the beach.
 */
public class Crab extends Actor
{
    public void act()
    {
        move(5);
        turnAtEdge();
        control();
    }
    
    public void turnAtEdge(){
        if(isAtEdge()){
            turn(160);
        }
    }
    
    public void control(){
        if(Greenfoot.isKeyDown("left")){
            turn(-10);
        }
        if(Greenfoot.isKeyDown("right")){
            turn(10);
        }

    }
}